Hi, thank you for your support!I'm prototiping a sort of control panel for my motor bike, to dim lights, temperature, voltage of the battery and so on. I'm using an arduino uno now but in the final product there will be an Arduino micro.I'm using 3 of the 5 analog ports on the board and there i a problem. When i actionate the potentiometer (10kohm) on A0, in A1 and A2 the reading is somehow influenced and changes. More precisely, when the potentiometer in at 1024 value (5.00v), the reading on the other two changes of -5%/10% :0Why?

Sketch? Are you doing anything with the potentiometer value that might have an impact on the supply voltage?

Ding ding ding, give that man a cigar. Look at the pot in the fritzling thingy. It's not wired right, it's pulling the voltage down when adjusted. It's set up to where it can completely short the power rails if it is adjusted all the way to one side.